... times of a normal manual air blower This Dual action blower with booster is an environmentally friendly ... manual air blower which uses a large rubber bulb. ... to prevent backflow from the nozzle. The air blower can create air pressure up to 30Kpa, ... about 3 times of a normal manual air blower. Specifications:Rubber bulb capacity: 80mlMaximum pressure: 30kPaLength: ...